Shuttle-changing loom



Dec. 18 1923.

A. J. CHEVRETTE SHUTTLE CHANGING LOOM Filed Oct. 31 1922 2 Sheets-Sheet 1 Dec. 18, 1923. 1,4729% A. J. CHEVRETTE SHUTTLE CHANGING LOOM Filed Oct. 31. 1922 2 heets-5heet 2 I'nmfwi'm? a f /fzrrette wtorne s Patented net. is, teas.

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AUGUSEIN J. CHEVRETTE, F WORCESTER, MASSACHUSETTS, ASSIG-NOR '10 CROMPTON & KNOWLES LOOIJI WORKS, A CORPORATXON 0F MASSACHUSETTS.

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Application filed @c'tober 31, 1922. Serial 1W0. 598,123.

To aZZwhom it concern:

Be it known that l, AUoUsTIN J. CHEV- name, a citizen of the United States, residlng at Worcester, in the county of Worcesti ter and State of Massachusetts, have invented a new and Loom, of which the following is a specifi cation. This invention relates to a shuttle changllu lng loom of the t'pe disclosed in the prior patent to E. H. yon, Serial No. 414,046, filed October 1, 1920.

Itis the general object of my invention 2 to provide improved mechanism in such a l loom by which the ejected shuttle may be transferred to a shuttle storage receptacle. A further object is to provide improved drivin connections for such mechanism, where y the mechanism remains at rest 211 between shuttle transfers and whereby it receives an even continuous movement when placed in operation at the time of transfer.

My invention further relates to arrangements and combinations of parts which will 26 be hereinafter described and more particularly pointed out in the appended claims. A preferred form of the invention is shown in the drawings in which-- 1 Fig. 1 is an end elevation of a shuttle 30 changing loom embodying my improvements; Fig. 2 is a detail plan view, looking in the direction of the arrow 2 in Fig. 1;

Figs. 3 and 4 are partial end elevations showing the mechanism in different operating positions;

ig. 5 is a sectlonal'elcvation, taken along the hue 5-5 in Fig. 3; Fig.- 3 is a detail sectional taken along the line 6-45 in Fig. 3; and --Fig. v'2' is a detail plan view looking in the direction of the arrow 7 in Fig. 5.

Referring to the drawings, 1 have shown a loom frame 10 on which is mounted a lay 11 having vertically moving shuttle boxes 12 by which a shuttle change is offected. The boxes 12 are mounted on a lifter rod 13 having a give-way connection 14 at its lower end to a litter lever 15 plan view,

5 independently of. the liftenlever 15 but is useful Shuttle-Changing mounted on a fixed pivot 16. An actuating.

'jection '39, as indicated in Fig. 1,

provided with a latch by which it may be connected thereto. The latch 20 is con-' trolled by weft detector mechanism not shown.

The parts thus far described form no'part of my invention and for a more complete description of these parts and also of the shuttle feeding devices, reference is made to the Ryon application above noted.

When a shuttle change occurs, the exhausted shuttle S is ejected from the upper or regular shuttle box 12 as the latter moves rearward in raised position, the shuttle S being received in a removal box or rece tacle 21 which is pivoted at 22 to the en of a lever arm 23 mounted to swing about a fixed pivot24.

A lifting link 25 is pivoted at its upper end'to the lever 23 and is provided wit roll 26 resting upon a;-.cam 27 fined to a large gear 28 and rotatable upon a shaft or stud 29. The lower end of the link 25 is slotted at 30 to receive-the end of the stud 29 by which it is guided in its vertical movement.

The gear 28 meshes with a pinion 31 loosely mounted and slidable on the cam shaft 19 previously described. A clutch disc 32 is secured to the face of the cam 18 fast on the shaft 19 and is provided with one or more notches of recesses 33 (Fig 7) adapted to receive a stud or pin34 in the ad'acent face. of the pinion 31.

'lhe pinion 31 has a grooved hub 35 engaged by the forked end of a release lever 36 (Fig. 6). A light spring 37 is connected to the outer end of the lever 36 and acts to yieldingly hold the pinion 31 out of driving engagement with the disc 33. A cam-like 111 or projection 38 (Figs. 3 audit) on the si e of the large gear 28 engages an upward projection 39 on the lever 36 and positively disengages the pinion from the clutch disc at the end of a single revolution of the gear 28.

The cam 27 is so located on the gear 28 that the weight of the cam 27, the link 25 and parts associated therewith continues the advance movement of the gear 28 after the pinion 31 is withdrawn, so that the cam we lug 38 will pass slightly beyond the prothus perthe pinion 31 to be again engaged e clutch disc 32 by the mechamsm to be described. A recess-271m the no mittin with t about lift normal lower position shown cam 27 receives the roll 26 and assists in yieldingly maintaining the parts in the normal osition shown in Fig. 1.

The mechanism comprises a grooved collar 40 slidable 0n the end of the cam shaft 19 and adapted to compress a relatively heavy coil spring 41 which is loosely mounted on the shaft 19 and engages the outer face of the pinion 31. The collar 4:0 receives the forked end of a bell crank 42 mountedon a fixed'pivot 43 and having its lower end extended into the path of movement of an arm 44: projecting rearwardly from the shuttle box lifter lever 15 and movable therewith.

The removal box 21 is open at its top and front side and is provided with a cam roll 45 which travels in the curved slot of a fixed cam plate 46 as the lever 23 is raised by rotation of the cam 27 from the position shown in Figs. 1 and 3 to the position shown in Fig. 4. The cam roll 45 co-operates with the cam plate 46 to swing the re moval box 21 around its pivot on the lever 23, thus elevating the rear portion of the box and depositing the shuttle S inthe fixed shuttle storage receptacle 47.

Having described the details of construction of my improved mechanism, the operation thereof will be readily understood. The normal running position of the parts is shown in Fig. 1. When weft exhaustion is indicated, the latch 20 is moved inward through the opening in the actuating lever 17 and engages the under side of the lever 15, as the lever 17 is raised by the cam 18. Such engagement causes elevation of the shuttle box 12 and the exhausted shuttle S is deposited in the removal box 21 as indicated in Fig. 3.

As the lever 15 moves upward, the arm 44: fixed thereto moves downward, engaging the bell crank 42 as shown in Fig. 5 and compressing the spring 41, thus overcoming the tension of the light spring 37 (Fig. 6) and holding the pinion 31 yieldingly against the clutch disc 32 until the pin 34 can enter the notch or recess 33 in the disc. Driving engagement is thus provided for the pinion 31, which thereafter rotates the large gear 28 and gives the cam 27 a complete operative movement by which the removal box 21 is raised to the position shown in Fig. 4 to transfer its shuttle to the storage receptacle 47. The box 21 is then returned to the in Fig. 1.

The driving pressureupon the pin 34 in the pinion 31 is sufiicient to prevent disengagement of the clutch parts until the rotation of the gear 28 is substantially completed, when the cam lug 38 on the gear 28 engages the projection 39 on the lever 36 and positively disengages the'clutch. It will be noted that the ear 28 is much larger than the pinion 31, the shaft 19 thus making newest several revolutions during a single operating movement of the cam 27 and the lever 23. A relatively slow'easy continuous motion of the transfer mechanism is thus obtained and the operating parts remain at rest except when called into action at the time of a shuttle transfer.

Having thus described my invention and the advantages thereof, I do not wish to be otherwise limited to the details herein disclosed, but what I claim is 1. In a shuttle changing loom, in combination, a shuttle removal box and means to give said box a single continuous upward movement to discharge position, and a succeeding continuous downward movement to normal receiving position after each shuttle transfer.

2. In a shuttle changing loom, in combination, a shuttle removal box and means to give said box a single continuous upward movement to discharge position, and a succeeding cortinuvous downward movement to normal receiving position after each shuttle transfer, said movements occurring in unbroken sequence.

3. In a shuttle changing loom, in combination, a shuttle storage receptacle, a removal box and means to move said box to ward and thereafter from said receptacle, said means comprising a cam, and means to give said earn a single continuous revolution after indication of transfer.

4:. In a shuttle changing loom, in com bination, a shuttle storage receptacle, a removal box and means to move said box toward and thereafter'from said receptacle, said means comprising a cam, driving means to give said cam a continuous rotary movement, devices to connect said driving means to said cam after indication of transfer, and means to positively disconnect said cam after a single continuous revolution thereof.

5. In a shuttle changing loom, in com bination, a shuttle removal box, a lever supporting said box, a link connected to said lever and having a cam roll, an actuating cam,

and means to give said cam a single continuous revolution after indication of transfer, said cam having a depression adapted toreceive said roll as the parts return to normal inoperative position.

6. In a shuttle changing loom, in combination, a shuttle removal box, a lever supporting said box, a link connected to said lever and having a cam roll, an actuating cam, and means to give said cam a single continuous revolution after indication of transfer, said cam being rotatably supported and the lower end of said link being guided in vertical movement by a slotted connection with the support of said cam.

7. In a shuttle changing loom, in combination, a shuttle storage receptacle, a re 131 movai box means to move saidbox toward from saici necepiacie, said means comprising a cam, a gear rotatable with said cam, a continuously driven shaft, a pinion ioose on said shaft, means to dutch said pinion io said shaft, and. a device on saici gear e'fieetive to positively disengage said pinion from Saki shaft after a single revolution of said gear and cam.

8. siinibizie changing 100m, in comibinaition, a shuttle storage ieoeptacie, a removal box and means to move said box tovveid anci from saiol receptacle, said meanscomprising a cam, a gear rotatable with saioi cam, a continuously driven shaft, a clutch, a reiativeiy iigiii; spring normally hoiciing said clutch disengaged, a relatively heavy spring encircling said shaft and abutting said pinion, and means to compress-said iaiter spring after indication of transfer to yieiciingiy move saidpinion to engagesaiei clutch.

In testimony whereof I have (hereunto afiizeci signature,

AUGUSTIN J CHEV 

